(This replaces the previous version of the HOWTO at http://lists.zope.org/pipermail/zope/2001-December/105668.html ) To use Xron on Zope 2.4.x, some hackery is required .. the following takes a Linux point of view, but only point 3 is somewhat platform-specific. 1. Import DateTime correctly. Instead of: from Globals import DateTime do this: from DateTime import DateTime You need to do that once each in 'Dispatcher.py' and in 'XronDTMLMethod.py' 2. Implement the patches in this thread: http://lists.zope.org/pipermail/zope-dev/2001-July/012486.html In short: you need to do this: from Products.PluginIndexes.FieldIndex.FieldIndex import FieldIndex and instead of this: self._catalog.addIndex('name', 'FieldIndex') you now need to do this in a couple of places: self._catalog.addIndex('name', UnIndex('name')) 3. This posting: http://lists.zope.org/pipermail/zope/2001-April/087151.html mentions a 'deadlock on start-up problem' for Xron on some systems. Roché Compaan enlightened me as to a fix. Xron needs to write to certain files, so they have to be readable and writable to the user Zope starts as. If Zope runs as nobody, for example, run 'chown -R nobody *' in the Zope root, and modify './start' to do something like 'su -c nobody ..../python z2.py ....' (i.e. change to 'nobody' *before* Zope runs). 4. Slay the dragon hinted at here: http://lists.zope.org/pipermail/zope-dev/2001-July/012502.html AFAIK, this is fixed by providing authentication information in 'Dispatcher.py':: (headers,response)=rpc(furl,'username','password') # Fire event Regards, Jean Jordaan